Indigenous species

Astacus astacus

→ the margins of the rostrum are almost parallel, long apex with median ridge
→ carapace with two distinct post-orbital ridges, second pair often distaly blunt

Astacus leptodactylus

→ long and narrow rostrum with almost parallel margins, prominent median carena
→ carapace with two distinct post-orbital ridges, with obvious distal spine

Austropotamobius torrentium

→ rostrum converging distally, smooth without a median carena
→ carapace with a single post-orbital ridge without distal spine

Non-indigenous species

Orconectes limosus

→ margins of rostrum almost parallel, without median carena
→ carapace with a single post-orbital ridge with obvious distal spine

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